@inbook{NBERc4935,
 Crossref = "NBERschm34-1",
 title = "Statistical Analysis of Cyclical Fluctuations in Selected Time Series, 1924-1933",
 author = "Carl T. Schmidt",
 BookTitle = "German Business Cycles, 1924-1933",
 Publisher = "NBER",
 pages = "115-260",
 year = "1934",
 URL = "http://www.nber.org/chapters/c4935",
}
@book{NBERschm34-1,
 title = "German Business Cycles, 1924-1933",
 author = "Carl T. Schmidt",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1934",
 URL = "http://www.nber.org/books/schm34-1",
}